(13-18 Hz) are needed to solve a problem or complete a task.
The current increased the activity of normal beta waves
-- a kind of brain wave that is usually active during sustained muscle activities, such as holding a book.
The EEG studies showed an increase in beta waves
and a decrease in spike wave discharges.
Gamma waves are present during sound sleep; theta waves indicate dozing or sleeping; beta waves
are present during an awake, excited state and alpha waves signify an awake, relaxed state.
are very-high frequency and are used when a person concentrates.